Hi,

If true, then https://bugs.webkit.org/show_bug.cgi?id=172026 can be closed.

I am finding the feature in features.json, but I am not sure that means there is actual code.

There may be code in RenderLayerBacking, but AFAIU that would mean "only" contain: paint and would not be WebExposed? Can somebody check?

Regards,

Rob.

Am 15.03.21 um 20:18 schrieb Simon Fraser:
WebKit supports CSS containment.

Simon

On Mar 15, 2021, at 9:14 AM, Rob Buis via webkit-dev 
<webkit-dev@lists.webkit.org> wrote:

Hi webkit-dev,

This is a request for WebKit's position on CSS containment.

Our first interest is to implement the contain property as specified here:
https://www.w3.org/TR/css-contain-1/

After that, we want to work on style containment and the content-visibility 
property:
https://www.w3.org/TR/css-contain-2/
Regards,

Cathie and Rob.
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